Cretan Archers: In Field of Glory, these sharp eyed mercenaries are rated as Superior and reroll 1s. If you're going to be the best mercenary bowmen on the field, you should try to look the part.
Javelinmen/Peltasts: These skirmishers are useful as filler or to challenge for terrain that I can't send my Spartan hoplites into. Yes, they can shoot but it's generally not that effective.
Thracian Medium Foot: The Thracians give me one nonskirmish foot unit that can operate in bad terrain. That's a lot of responsibility! I painted them in a Thureophoroi style so they can pull double duty and serve on my other ancients lists. I really should have used a fleshwash over the white on these fellows instead of an earthwash. Ah well...
Commanders: In Field of Glory, a Spartan army can only field 3 commanders. If I run a Spartans with allies list, I can field a 4th General for the allied troops. I did sneak in a single Xyston figure to this Old Glory lineup. He's the fellow with a helmet under his arm, reminding me of how nice Xyston figs are.
For the Spartan project, I've been painting to the superb Great Courses "Pelopponesian War." It's 36 half hour lectures led by the distinguished Professor Kenneth Harl at Tulane. One of the great things about my audible membership is that an 18 hour Course counts as 1 book. I just realized they also have Donald Kagan's superb "The Peloponnesian War" so that's in my cart and ready to go. If there is a quiz show centered on the Pelopponesian War, I'll soon be ready for it!